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TEST PREPARATION
To test the MDR radio, a test mode must be entered to
disable the normal channel scanning mode for GE-MARC
operation. The test mode function is normally disabled be-
fore shipment to the customer. The radio's personality must
be PC programmed to access the test mode function located
on the options screen in the PC programming software.
TEST MODE COMMANDS
The test mode enables the technician to exercise test
functions in the field using the radio handset. Test mode is
entered by pushing the FCN key and then pressing the "A"
key. The PC programmer can program the radio to prevent
access to field test mode. If so programmed, the radio display
will not change when the above sequence is entered.
When test mode is first entered [FSxx #01] appears in
the display where xx is the 2 digit number designation of the
frequency set that was being scanned and 01 represents the
first frequency in that set. If the PTT is pressed, the radio will
transmit microphone audio only, and no tone detection will
take place because thedefault tone is OO. When the PTT is
released, the radio will "look" for a carrier on the selected
channel. If a tone frequency is selected, the selected tone will
be transmitted when the PTT is depressed, and if a carrier is
received the selected tone will be detected. If the selected
tone is detected, the audio to the handset and the external
speaker (if installed) will be turned on.
When the on channel carrier is detected the indicator
bars wll be active and wll not be active if an on channel
carrier is not present.
DEFAULT CONDITIONS
The radio, upon entering test mode, will revert to the
first programmed channel in the frequency set that was being
scanned when test mode was entered.
Test mode cannot be entered from a conventional
area. The volume will be set to the level saved after
the most recent power down during normal opera-
tion. The Tone number is defaulted to 00.
[TONE00] All speaker audio paths are unmuted.
NOTE
CHANNEL FREQUENCY SELECT
To select a channel other than the frequencies in the
current trunked set, press CLR followed by a 2 to 4 digit
channel number (10-1208) followed by "CLR". The chan-
nels can be entered without zeros.
For example to select channel 12, enter: "CLR 12
CLR" or "CLR 012 CLR" or "CLR 0012 CLR"
To determine the channel number use the following
formula:
desired frequency
or channel number
CAUTION
For channels in the talk-around band 851.0125 thru
865.9875 MHz (ch 3610 - 4808), the bandswitch
line must be low (see FCN 21) and the talk around
option must be installed.
Operating the transmitter in talk-around mode with-
out the talk-around option board installed can cause
damage to the radio.
TEST MODE COMMANDS
AND FUNCTIONS
All functions have a 1 or a 3 key entry format. The single
entry tests are similar to Classic II. The 3 key entry tests are
similar to TMX-8712. The single digit tests use the numeric
keypad 1, 3, 4, 6, 7, 9,
& #. The 3 digit entry tests use the
"FCN" key followed by the 2 digit test number. Pressing the
key or key sequence initiates the action.
The single key commands and their functions are listed
below. These commands are invoked using the keypad. A
compelte description of all commands and their functions
follows this listing.
CLR
=
Start and end delimiter for
channel number
END
=
Turns the transmitter off
LBI-38953
= 805.8875+ .0125
channel number
= (frequency - 805.8875)/ .0125
= (816.2625-805.8875)/
.0125=830
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